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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 20:09
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What are the advantages/disadvantages of the 280 Rem Vs. 280 AI?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:00
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Depends on whether or not your a handloader. I have a 280 Ackley and I like it very much. As far as additional performance, the Ackley probably gains somewhere between 50 to perhaps 100 fps over the standard 280, and if someone tells you they get alot more than that they are either full of sh*ttt, don't own a chronograph or they are loading to unsafe pressures. The good news, even if you are not a handloader, is that you can fire standard 280 ammo out of a rifle chambered for the Ackley version. I also believe, again if you handload, that case life is prolonged with the Ackley chamberings because a sharper shouldered cartridge tends to "flow" brass into the neck and shoulder area at a slower rate. So, if your a handloader, go with the Ackley. If for no other reason, they rate very high on the cool factor scale.
 
Roy
 
PS. You can buy 280 Ackley ammo from anyone who sells Nosler Custom Ammunition.


Edited by Roy Finn - June/18/2008 at 21:03
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:01
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Here's a decent article http://www.angelfire.com/ma/ZERMEL/280AI.html
I like what the author has to say, "The 280 Ackley Improved qualifies as an unpretentious 7mm soft magnum. It does not have to take a backseat to any of the medium calibers. The outstanding selection of bullets makes it one of the most versatile hunting rifles. Try it on antelope, deer, moose and elk. The two latter species require the 175-gr. bullets. Also I have killed moose with 160 gr Speer bullets".
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:02
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The advantage/disadvantage is that you can get into a never resolving discussion about how your .280 AI is somehow the equal of a 7mm Rem. Magnum.
 
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:11
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A short article from Kenny Jarrett on the 280 Ackley. Back in the day, it was his favorite cartridge for long range deer sniping.

                                                   280 Ackley Improved

120 gr. Nosler Bullet............3340 fps
140 gr. Nosler Bullet............3150 fps
150 gr. Nosler Bullet............2950 fps

If I had to lay my finger on one thing that really brought Jarrett Rifles to the dance it would be the .280 Improved. We have made over 400 rifles in this caliber and probably rebarreled at least that many. For me to say I’ve had more experience with this cartridge than anyone has ever had is a safe bet. After several long discussions with P.O. Ackley I decided that this was a cartridge that I wanted to work with. Even though Mr. Ackley would not take credit for its creation, it bears all the markings of Ackleys work. He did a 7mm-06 version which is slightly shorter and has a little less capacity than the .280 version. Mr. Ackley was very complimentary of the .280 Improved. He once told me that he felt its capacity bore about the maximum usable powder capacity for 7mm. Ackley had a lot of influence on me in the earlier days and out of respect for his help, most of my .280 Imp. rifles still bear his name. Several things make the .280 Improved such a wonderful cartridge. One is factory ammo can be used in the improved chamber, second, brass life is good, and third, versatility of use created by its high degree of accuracy with bullet weights ranging from 120gr. To 160gr. One can see that there is very little difference if any between the magnum 7mm’s and the .280 Improved. Mr. Ackley had a strong opinion that a belted case was not needed in 7mm. Below are average velocities for the .280 Improved and I say average because rifles are individuals. In fact, the tight bore barrels dimensionally speaking produces the best accuracy but not the best velocity.

On the light bullet end, you have a set up that will beat a 25-06 all to pieces. Conversely speaking the heavy end bullets will out do a 30-06 velocity wise. Because of the higher ballistic co-efficient of the 160 gr. 7mm bullets, compared to the 160gr. 30 caliber bullet, it will retain its down range velocity better.

If you only want one custom rifle, then the versatility should be your prime consideration. The .280 Improved has that. Totally adequate on small African game or Antelope with the 120's. Perfect for larger deer with the 140's and a real elk and moose buster with the 160's. Also, the bullet selection is tremendous on 7mm. The .280 Improved has been our best seller for 8 years. Unless you are really recoil shy, a muzzle brake is not necessary on a .280 Improved. We have continued to sell them through the years because they work extremely well. I did alter the throat angle where they would really “stick ‘um in there.” We made them work and shoot and still do. Thousands upon thousands of animals have been taken world wide with the Jarrett Rifle in .280 Imp. That many dead animals couldn’t be wrong. For more information on the .280 Improved please see it in the Nosler No.4 reloading manual.

 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:23
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the advantage, you get more oomph out of  an already kick ass round.
the disadvantage, none of the big boys currently chamber them in there rifles
 
 
ive been contemplating having mine improved but money isnt there for now
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:35
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Thanks to all.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:36
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Pyro, what would you say was the cost to "improve" a 280 to 280AI?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:38
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Thanks Roy Finn!
Hasn't Jarrett converted to his own 300?
Also, ballistically, the 280 is not that far behind?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:41
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Originally posted by SChunter SChunter wrote:

Pyro, what would you say was the cost to "improve" a 280 to 280AI?
you know what i wanna know the answer to that myself
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:42
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Tahqua, the only major difference is the soulder angle??
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:42
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Sorry, Tahqua--Shoulder
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:46
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thats correct they blow the shoulder out to a 40 degree angle in the ackley version, which shortens the neck a bit but gives you a little more room for powder by doing that, so you gain buy improving
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 21:56
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Keep in mind that the write up by Jarrett was probably at least 15 years old. It was around the time when he was just getting the 300 Jarrett up and popular. There is nothing really magical about the 300 Jarrett. It is probably easily outdone by the 300 UltraMag these days. In all candor, there isn't a whole lot of difference between a 300 Weatherby, 300 Jarrett, 300 Ultra Mag, 30 STW (which I own) and most anything else based on the 8mm Remington mag case or 404 Jeffery. They are all a major handful to shoot regarding recoil.
As far as the cost to rechamber to an Ackley, figure about 100-150 depending on the talent level of your chosen gunsmith. Remember, there isn't a big game animal in North America that couldn't be cleanly taken with a 280 Ackley.
 
Roy
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 22:01
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Originally posted by pyro6999 pyro6999 wrote:

thats correct they blow the shoulder out to a 40 degree angle in the ackley version, which shortens the neck a bit but gives you a little more room for powder by doing that, so you gain buy improving
 
Not nit-picking, but the shoulder is blown out to 40 degrees and it is moved slightly forward as well. In addition, the case body has slightly less taper from the base to shoulder.
 
Roy
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 22:01
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100-150 thats all, wow i figured it would cost twice that, but i dont deal with smiths either.
the 30.378 wby is another one to add to that list of nasty 300's
 
roy is correct the .280 will do exactly that
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2008 at 22:06
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FYI
 
 
 
 
NoslerCustom 2nd Edition

NOSLER UNVEILS THE NOSLERCUSTOM™ BOLT ACTION RIFLE EDITION #2 One year after the introduction of the first-ever NoslerCustom Bolt Action Rifle Limited Edition, the folks in Bend, Oregon have followed up the 300 WSM in 2005 with a surprising new caliber—the 280 Ackley Improved. Again limited to just 500 total units, the NoslerCustom Rifle presents an incredible opportunity of performance for the shooter whose passion for accuracy is equal to his passion for fine craftsmanship.
 


Edited by martin3175 - June/18/2008 at 22:08
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 12:28
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I had one built on a Montana Rifleman action and a Shilen barrel. It will cut a ragged hole at 100 yards with almost any 140 grain you care to feed it. Seems to be just as accurate while fire forming brass as it is while shooting the .280AI brass, just a little slower. You cant go wrong. Also regarding price, sometimes you can purchase the reamer and work a deal with the gunsmith to keep it after he's finished and save yourself some money.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 17:00
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I think the $150.00 price point is pretty accurate, though it can vary greatly depending on action type, so I've been told.  Personally I think the greatest argument for the 280ai is the "curb" appeal, it's just neat having something different.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 17:05
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I have absolutely nothing against the .280 AI, but my plain jane .280 gets 2920 with 150 gr. Ballistic tips, without a maximum charge, and 2859 avg. with 160 gr. Partition, which is hardly the fastest bullet around.  
 
Not much of an increase for the money, is my point.  Where am I wrong?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 18:04
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I tend to agree with you, MOJO.  The increase in speed in negligible, and the increase in cost of ammo would make it a little more appealing to have the 280 rem, unless you are handloading.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 18:05
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Although as stated earlier, the curb appeal or coolness factor may be worth it!?!

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 18:57
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I think that if I were to have a semi-custom rifle built, the 280ai would be on my short list along with the 6.5-284.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 19:48
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For a few years there, the .280 AI was all the rage.  There is nothing wrong with it at all, and can give you a few extra grains for additional fps.  Fire forming your own brass sounds like a neat idea, and adds to the "custom rifle" good vibes. 
 
But 175 grain bullets with a .280 AI is not a necessity to kill elk at reasonable distance broadside shots.  The .280 160 Partition will handle that job.
 
Mojo
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2008 at 21:59
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heck the 140's or 150's will get it done on elk  too.
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